?? ?????????“???”:??????????
????:1???????????:?????????
2???????vx
3?????
4??????
5???????300??
??????????9???????????25???????????? (????? ??)“???,???,”?????,??“?????????”?
25??“?????????”??,??,“?????”???????????,??????????????,????,??????????????????????????????????????????????,??????????;“??????????????????”???????,???,????,??????????????????;“?????”?,??,????????????
?????,??,??????????????,?????????“????????”:
??????????????????“1+1+N”???????,???“1”???????????????????????;“N”?????????????????????24????????????????
???????????????????????????????????????????,????????,????????,?????,????
?????????????56????????????????20??????????????????,?????????
????????????,?????????????????????????????????????????“???????????????????????”?(???????????) ???:????????